Question

Out of Census and sample study, which method should be adopted in case a person have to check the lifespan of an electric bulb from a lot.

Answer 1

Answer:

Advantages of Sample Surveys compared with Censuses: Reduces cost - both in monetary terms and staffing requirements. Reduces time needed to collect and process the data and produce results as it requires a smaller scale of operation. (Because of the above reasons) enables more detailed questions to be asked.